Apparatus for a pneumatic relay venting pressure dynamic feedback compensator

1. A relay device, comprising:

an inlet passage;

an outlet passage spaced apart from the inlet passage;

a first flow passage fluidly coupled to the inlet passage and the outlet passage;

a plug assembly disposed in the first fluid passage, the plug assembly configured to regulate flow of fluid between the inlet passage and the outlet passage; and

a second flow passage configured to direct fluid flow around the plug assembly between the inlet passage and the outlet passage,

wherein the plug assembly comprises a first plug, a second plug, and a third plug coupled therebetween, wherein the first plug and the second plug are disposed near, respectively, the inlet passage and the outlet passage, and wherein the second flow passage has a first end proximate the first plug and a second end proximate the second plug.

2. The relay device of claim 1 , wherein the third plug has a first end and a second end, and wherein the first end of the third plug is coupled with the second plug by a bead chain.

3. The relay device of claim 1 , wherein the second flow passage is configured to reduce a net force that the second plug exerts onto the third plug to maintain a positive force on the third plug to keep the third plug closed during a venting state.

4. The relay device of claim 1 , further comprising a mechanical device having a first position and a second position that configure the mechanical device to, respectively, permit flow through the flow passage and to prevent flow through the flow passage, respectively.

5. The relay device of claim 1 , further comprising an electromechanical device having a first state and a second state that configure the electromechanical device to, respectively, permit flow through the flow passage and the prevent flow through the flow passage, respectively.

6. The relay device of claim 1 , wherein the second flow passage has a mechanical device positioned therein to configure the second flow passage to direct fluid flow through the second flow passage.

7. The relay device of claim 1 , wherein the second flow passage has an electromechanical device positioned therein to configure the second flow passage to direct fluid flow through the second flow passage.

8. The relay device of claim 1 , wherein the second flow passage is configured to balance pressure between a first side of the plug assembly near the first plug and a second side of the plug assembly near the second plug.

9. A relay device, comprising:

an inlet passage;

an outlet passage spaced apart from the inlet passage;

a first flow passage fluidly coupled to the inlet passage and the outlet passage;

a plug assembly disposed in the first fluid passage, the plug assembly configured to regulate flow of fluid between the inlet passage and the outlet passage;

a second flow passage configured to direct fluid flow around the plug assembly between the inlet passage and the outlet passage; and

a gate disposed in the second fluid passage, wherein the gate is configured to open in response to a threshold pressure to allow fluid flow through the second flow passage.

10. The relay device of claim 9 , wherein the second flow passage is configured to reduce back pressure on the plug assembly near the outlet passage.

11. The relay device of claim 9 , wherein the plug assembly comprises a first plug and a second plug, wherein the first plug and the second plug are disposed near, respectively, the inlet passage and the outlet passage, and wherein the second flow passage has a first end proximate the first plug and a second end proximate the second plug.

12. The relay device of claim 11 , wherein the plug assembly comprises a third plug, wherein the third plug has a first end and a second end, and wherein the first end is coupled with the second plug and the second end is coupled with the first plug.

13. The relay device of claim 12 , further comprising a bead chain, wherein the first end of the third plug is coupled with the bead chain.

14. The relay device of claim 12 , wherein the second flow passage is configured to reduce a net force that the second plug exerts onto the first plug to maintain a positive force on the third plug to keep the third plug closed during a venting state.